Just out working on my car after reading the frwilk write up on the 944NA stumble. My car would idle at about 850-900, but when I would rev it, it would drop to 600 for a second, then go back to normal idle. I was adjusting the 8MM stop screw nut under neath the throttle cam, well not adjusting, breaking. I went to turn the nut out to higher the idle a little bit, he says 1K, and the screw broke. Now i have an idle that is 1200rpm's, and now way of getting the screw out? Any tips or pointers on how to do this procedure?

The bolt middle left, above my finger.